Mercedes-Benz CLA, GLB Recall R/2026/203: Software Version Of Communication Module, Who Is Affected And What To Do
- Low
- How serious
- 5 Jun 2026
- Launched
- 37
- vehicles in the UK
- SRPC2606 / 5496806
- Manufacturer’s campaign code
Mercedes-Benz recalled CLA, GLB vehicles built between 27 May 2025 and 27 February 2026. Mercedes-Benz AG has determined that on certain CLA (174 platform) and GLB (244 platform) vehicles the software of the communication module might not meet the intended specification. The recall notice describes the fix as: as a remedy Mercedes-Benz AG via its Mercedes-Benz service partners will update the software on the affected vehicles. You won't usually pay for it.1
What’s Wrong
Mercedes-Benz AG has determined that on certain CLA (174 platform) and GLB (244 platform) vehicles the software of the communication module might not meet the intended specification.
DVSA's Original Wording
Concern: Software version of communication module Defect: Mercedes-Benz AG has determined that on certain CLA (174 platform) and GLB (244 platform) vehicles the software of the communication module might not meet the intended specification. Remedy: As a remedy Mercedes-Benz AG via its Mercedes-Benz service partners will update the software on the affected vehicles.
Contains public sector information licensed under the Open Government Licence v3.0.
The Risk
The recall notice describes the concern as: software version of communication module.
The Fix
The recall notice describes the fix as: as a remedy Mercedes-Benz AG via its Mercedes-Benz service partners will update the software on the affected vehicles. The fix is a software update, which usually takes under an hour at the dealer.
Are You Affected?
CLA, GLB built between 27 May 2025 and 27 February 2026 may be included. Mercedes-Benz estimates 37 vehicles in the UK. Enter your registration to check, then confirm by VIN with Mercedes-Benz, because not every car in the date range may be included.
Which Car Is It?
Choose the make and model so we can match recalls to your car.
What To Do Now
- Check your car by registration above, then by VIN with Mercedes-Benz.
- Book with any franchised Mercedes-Benz dealer, quoting the campaign code SRPC2606 / 5496806 or the DVSA reference R/2026/203. See how to get a Mercedes-Benz recall fixed.
- Follow the letter's instructions until the repair is done. See can you drive a car with a recall?.
Related Recalls
| Launched | Vehicle and fault | Severity | Reference |
|---|---|---|---|
| CLA, GLBElectric drive unit power electronics | Low | R/2026/315 | |
| CLABolting of front seats and belt buckles | Urgent | R/2025/533 | |
| CLAVariant of 48V wiring harness | Urgent | R/2025/556 | |
| CLAComposition of window-airbag fabric | Urgent | R/2025/462 | |
| CLASoftware of driving assistance system | Low | R/2025/461 |
This is one of 833 Mercedes-Benz recalls in DVSA’s data. The Mercedes-Benz recall launched before it was R/2026/140 on 15 May 2026, for wheel bolt variant. The one launched after it was R/2026/191 on 11 Jun 2026, for windshield bonding. You can also see every Mercedes-Benz recall, all recalls launched in 2026 and software recalls across every make.
Source: DVSA recall R/2026/203, launched 5 June 2026. Data updated 15 October 2026. How we grade urgency.
Sources
- The Code does not itself say repairs are free. GOV.UK guidance says "You will not usually have to pay for any repairs or parts under a safety recall." gov.uk Checked 15 Oct 2026.